I need to measure level of vertical tank of 4mtr with bottom cone comprising of slurry with mixed acid' Nitric acid & Sulfuric acid which is being agitated that also causes fume generation. We have used contact less radar type transmitter, but due to fumes there is a jelly formation on the sensor and thus doesn't work as intended.
Also, due to changing density i cannot use DP type transmitter.
Sp. grav variations don't rule out d/p measurements necessarily.
Two d/p measurements are required on for gravity, the second for level, with the s.g. correction in your dcs.
You can direct connect to the process with chem seals or use bubblers with compatible gas.
You want something that works and easy for your crews to trouble-shoot, a practical solution.
The laser level transmitter is an other good option for this application. A example of products ...